There are 10 people in a room. If each person shakes hands with exactly 3 other ...【小站备考】

GRE®

登录注册

Question 20 Selected one answer choice

笔记

反馈

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

There are 10 people in a room. If each person shakes hands with exactly 3 other people, what is the total number of handshakes?

A.15

B.30

C.45

D.60

E.120

我的答案：

免费解锁Official71-75真题

(Official1-70可直接使用)

扫码添加助教微信

回复关键词“解锁真题”

即可免费解锁！